Adjusting-lever arrangement for calculating-machines.



PATENTED FEB. 5, 1907.

P. THINKS. ADJUSTING LEVER ARRANGEMENT FOR UALCULATING MACHINES.

APPLIOATION FILED MALE, 1906.

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PATENTED FEB, 5, 1907.

P. THINKS. ADJUSTING LEVER ARRANGEMENT FOR CALCULATING MACHINES.

APPLIOATIOH PILBD MAB.5.1906.

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UNITED STATES PATENT OFFICE.

FRANZ THINKS, OF BRUNSWICK, GERMANY.

Specification of Letters Patent.

Patented Feb. 5, 1907.

App-iication filed March 5, 1906. Serial No. 304340.

To all whom it may concern.-

The invention is shown in the accompany- Be it known that I, FRANZTRINKS, engij ing drawings, wherein like reference characneer, a subjectof the Emperor of Germany, residing at Brunswick, Duchy of Brunswick,Empire of Germany, have ,invented certain new and useful Improvements inAdjusting- Lever Arrangements for Calculating-Machines of which thefollowing is a specification.

' Calculating-machines are known in which the adjustment of the valuestakes place on a toothed wheel having a variable number of teeth by theturning to a certain extent of a cam-disk connected with each of theseadjusting-wheels, bringing a given number of teeth into the workingposition. The cam-disks are turned by means of small handles whichproject from the periphery of the disks through slots in themachine-casing, as illus trated in Figure 1 of United States Patent No.650,006, and Figs. 1 and 2 of United States Patent No. 823,375. j

Now the object of the present invention comprises the arrangement of aseparate goup of adjusting-levers which are not mly connected with thecam-disks, but in spite of that are either used for their adjustment orare moved simultaneously with them with the object of registering themove ment of the cam-disk The advantages resulting from this arrangementwill now be hereinafter set forth.

In machines of the said kind an arrangement is frequently adopted bywhich an indicating mechanism is adjusted by the displacement of thecam-disks, which indicating mechanism allows of the value each timeadjusted being read off. This is attained by means of teeth formed onthe peri hery oif each calm-disk by which the toothe wheels which setthe indicating apparatus infliction are operated. In the arrangementabove described the said toothed wheels may be adapted to be thrown outof action, as other wise onth rotationof the adjusting-wheels operatedby means of the crank, in which rotation the camrdisks connected withthe shaft share, the indicating mechanism is also moved. The necessarythrowing out of action of the toothed wheels is effected by displacingtheir common shaft, as illustrated in JnglishPatent No. 3,135 of 1904,Fig. 3.

By this invention the throwing out of action of the toothed wheels--thatis to say, anyhdisplacement-of their shaft-is dispensed Wit ters denotecorresponding parts throughout the several iews, and in Wl110l1 Fig. 11s a ront elevation of two ad usting Wheels embodying the invention. Figs'. :2

and 3 are side views of the machine, partly in section. Figs. 4 to 8'aremodified constructions of the invention.

In Fig. 1 a second handle 0 is provided close beside eachadjusting-lever d, which is-connected with. a cam-disk b Fig. 3, in theordinary way, which second liandle c be longs to a toothed wheel d, Fig.2, which is loosely revolubly mounted on the sl: aft 6 of the.adjusting-wheels f and the cam-disks b and gears wig: the toothed wheelsof the indicating mecanism p. Such adjusting-levers havin a movementinconnection with the indicatlng mechanism are in themselves known; butthe improvement here is their peculiar combination with the handles a'of the carmdisks b. In the adjustment, in fact, the person operatingthe machine takes hold of both levers a and c simultaneouslyand bringsthefhr into position for the desired value. If then by the rotation ofthe main crank l, which is operated in the ordinary way, the adjusting-wreels f, together with the cam-disks 'b, are turned, the handles '0 andtheir toothed wheels d remain. at rest, as they are loosely mounted ontheir shaft 6, and the indicating mechanism remains in' the positioninto which it has been adjusted until the user after completing therotation of the crank pushes back again both handles a and c simutaneously into the position of repose. If no value be attached toretaining the total sum after-the adjustment of the separatefigures hasbeen completed, an immediate, afitornatic return of the handles 0 intotheir initial position may be effected by means oi simple springs h,which are connected with eaohhandle c or toothed wheel at, or catches 9may be so arran ed thatthe handles c cannot follow the pu l of thesprings it until tl'aese catches are released, whichrelease,forinstance, may take plac automatically during the rotation of thmcrankby means of a stud i, rotatingwith one of the disks 1) and f, Wl ichstud by lifting the arm 9 turns the cominonsgind'laof the catches g.

A s'omewhat-difi'erni folm of construction is shown in Fi s. 4' and 5.The handles 0 are here prolonged beyond the actual adjustinghandlesa.The person using the machine tion by means of suitable springs as or thelike, so that the handles a can pass them. On=- the turning of the crankthey overtake the handle 0 from the rear -that is so say, the pins 7:are adapted to harry with them the nndles a on turning the longer handlea; but the reversed wa on turning the main crank the handles a, w ichthey rotate cannot carry with them the pins it.

Instead of the couplin hereinbefore described between two hand es a andc a device such as shown in Fig. 6 may also be employed, If the handle0, be moved in the direction indicated by the arrow, the pawl m iropsbehind the handle a or into a notch formed therein. After release oftheehandle c the pawl 'm rises until the handle a can move unimpededlybeneath it.

The arrangements shown in Figs. 4'6 have also the advantage that thehandle c, utilized for the ad ustment, ma be of any suitable length andany suitablia width, because it does not share in the rotation of theadjusting-wheel shaft e, and therefore no regardneed be paid to theexisting extremely By this means the a vantage is obtained that by thehandle 0 being further moved back lnto the position a: the coupli member7a is removed from thetrack of the andle a, and

thus separate precautions for doing this are unnecessary.

I declare that what I claim isl In a calculating-machine, thecombination with operating-wheels provided with radially-displaceableteeth and shiftable camdisks for adjusting the teeth, of means arrangedin close proximity to the cam-disks and adapted to move theoperating-wheels simultaneously with the movement of the cam-disks, andan indicating mechanism operated duri such movement of theoperating-wlneels slmultaneously with the movement of the cam-disks. y

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

\ FRANZ TRINKS. Witnesses:

WILHELM LEHRKE, JULIUs SEGKEL.

